Exploratory Analysis
Doing Stats 
The Final Frontier 
   Exploratory Analysis
 
Tools:
Doing Box and Whisker Plots:
With an Excel Macro
Plus Detecting Outliers
Doing Frequency Distribution:
Stem & Leaf Plot
 
External References:
Wikipedia
Helsinki University of Technology
 
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Exploratory Data Analysis
EDA provides simple and easy to handle tachniques for data presentation and anaysis.
Typical techniques are:
Stem-and-Leaf Plot
Box and Whisker Plot + Detecting Outliers (a Java applet)
Box and Whisker Plot (an Excel macro)
Histograms (a Java applet)